Ventilator



Sept. 25 1923. 1,469,022

J. ROBINSON VENTILATOR Filed Aug. 25. 1922 James KR Dhinsnn @Hioznaq Patented Sept. 25, 1923.

item

JAMES K. nonrnson mr'rnn noennnnnnsns.

y nTILAToB.

-App1ication filed August 23,1322. Serial No. 583,826.

T 0 all 107mm at May concern: 7

Be it known that I, Janus K. ROBINSON,

a citizen of the United States, residing at LittleRock, in the county of Pulaski and State of -Arkansas, have invented ecerta n new and useful Improvements in Ventilators, of which the following is a specification, reference being had to the accompanying drawings-L i it 7 i This invention relates to improvements in ventilators, and more particularly toa ventilator of the induction type whereby damperwhich may becclosed toprevent the ingress of wind driven rain, snow or the like and which has means for controlling the damper disposed interiorly or" the cowl and draft member in such a manner that it does not interfere with theoperation of the ventilator. V I a A stillfurther object of theiinvention is to provide a device of this character which is simple in its construction and arrange ment, durable in service'and a general improvement in the art.

-These and other objects I attain by the construction and arrangement shown inthe accompanying drawings wherei ngfor the purpose of illustration is shown a preferred embodiment of my invention and wherein like reference characters designate like parts throughout.

In the drawings I V Figure 1 is a vertical sectional view taken through a ventilator constructed in accordance with my invention; f f

Figure 2 is a front elevation thereof;

Figure 3' is a section on the line 33 of Figure l; and c Figure 4 is an enlarged detail sectional view showing the manner of mounting the bearing rotatably supporting the cowl. 7

Referring now more particularly to the drawing, the numeral 10 indicates a draft member adapted for connection with a suit- '15 which is able pipe (notshownfleading to the room or building tobe supplied with air. 1Adj cent its lower tend the draft member 10' is provided with a cross bar 11 upon the up; per surface of which s securely mounted a yoke l2,' the -yoke'and cross bar having aligned openings 13 and 314 respectively,

-which are axial to the draft member 1O;

Adjacent itsupper end the "draft member 10 has mounted there na second cross bar ing 16.

r The numeral 17 designates a bearing plate seated upon the crossbar 11 and havingan opening-18 formed therein aligning 1 with the opening 14 of the crossbar. V The" upper surface of the bearing plate 'hasa 'con'c'aved portion 19 surrounding the open;

inglS thereof, fora purpose presently'to provided with an axial open app'eaiz -This bearing is held in position upon the crossbar by means of a yoke strap 20 having an opening 2 n its upper surface exposing the concaved portionltl of the bearingl? and in its lo'weinsurface an opening 22 aligning with the opening 14 of the yoke. A .tubularbearing rod23-is directed through the openings 16 of the crossbar l5 and 13 of the yoke 12 and has applied to its lower end an annular bearing plate 243 curvedupon its lower surface withia curv- V atu're greater than the curvature of the concavity l9 and adapted to abutthereagainst, in theipresent instance the lower end of the. bearing rod 23 being shown as screw-threaded for coaction with screwe threads formed upon the interior of the annular bearing plate 24:.

The cowl has seated in'the'angle bend thereof aplate 27 having a threaded opening formed therein axially aligned with the vertical portion ofthefcowl and which is adapt-' ed for the reception of the threaded upper end of the tubular-bearing rod 23. Secured to the cowl adjacent the plate 27 is a downwardly extending member or strap 28 having a horizontal portion 29, the'end of which is secured to the cowl and which horizontal portion is provided with an opening through whichthe bearing rod 23 is directed. Adjacent its lower end the cowl is provided with a cross bar 31 which is likewise provided with an opening through which the bearing rod may be d1- rhe numeral .25 indicates, a cowl provided Wlth a 1311 26 adapted to direct the cowl Wltlrllls upper end opening to windward.-

flange 3d formed upon the outer surface of the cowl and extending outwardly over the upper edge of the member 10. The horizontally directed portion of the cowl is formed in two pieces, 35 and 36, the

member 35 forming a continuation of the cowl proper and the member 36 being se cured thereto and of slightly greater size than the member 35, this excess size being arranged at the lower side of the member 35 and projecting beneath the forward edge thereof. The member 35 forms an induction ,end proper and the member 36 a false induction end. The purpose of the spacing of the lower portions of the members 35 and 36 will be obvious when it is pointed out that wind driven rain collecting in the induction end of induction ventilators is blown bythe wind passing into the ventilator to apoint where it falls within the draft memberlO and into the room being ventilated. In the construction at present shown the lower edge of the induction end being spaced above the lower end of the false induction end, a considerable collection of rain will be necessary before the same could pass into the cowl proper. In order to prevent such a collection, Iprovide the inner edge of the false induction end with a plurality of openings 3? through which the wat may drain off, and furthermore space the nner edge of the false induction end from the cowl proper, as

at 38, for tie same purpose.

39 designates a butterfly damper disposed in the outer end of the false inductionend of the cowl and having its pivot extending through the side walls thereof and provided with springs 40, one end of each of which is secured to the pivot and the other end of which is secured to the section 36. These springs act at all times to hold the damper in the position shown in full lines in Figure 1, so that normally air may pass into this induction end and so to the room to be ventilated. The vertical member 28 has rotatably mounted therein a pulley 41, the edge of which extends immediately adjacent the bearing rod 23, the bearing rod 23 being provided with a slot 42 at this point. A

cable or chain 43 has its ends secured to the butterfly damper 39 and passes over the pulley 43 through the opening 42 and downwardly through the bore of the bearing rod 23. The lower end of this cable passes through the bearing 19 and cross bar 11 and is providedwvith a ring td by means of which it may behooked to hold the damper in closed position and prevent the entrance of air or flying particles carried by the air during severe storms; release of the cable 43 the damper assumes an open position by reason of the springs 40 and again permits passage of air through the ventilator.

From the foregoing it is believed to be obvious that a ventilator constructed in accordance with my invention will prevent the entrance of wind driven rain and at the same time provides a simple and durable structure which will not readily get out of order and which may be very cheaply produced. It will furthermore be obvious that the construction as hereinbefore set forth is capable of some change and modification without materially departing from the spirit of my invention and I accordingly do not limit myself to such specific structure except as hereinafter claimed.

I claim I I. In an induction .rotatable'cowl ventilator, an induction end. comprising a main induction end and a falseinduction end ap- Immediately upon plied to. the main induction end and of' greater size than said main induction end, the excess size of the false induction end being disposed at the lowers de of the main induction end whereby to form a pocket re straining the passage of liquor into the cowl, and drain openings formed in said false induction end at such pocket.

2. Inan induction rotatable cowl ventilator, an induction end comprising a main induction end and a false induction end applied to the main induction endand of greater size than said main induction end, the excess size of the false signature.

JAMES K. ROBINSON. 

